Bluelab Conductivity Pen

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Measure nutrient strength with a reliable Bluelab Conductivity Pen. This handheld meter helps you check the strength of your nutrient water by measuring EC, CF, or ppm, along with water temperature. It is a useful tool for growers who want more confidence when topping up nutrients, refreshing the reservoir, or learning how their FlowGrow tower responds over time. Ideal for home growers who want a more accurate way to understand nutrient strength beyond basic dosing instructions. Show more